Radiation Emissions of Popular Smartphones
Smartphones have become an integral part of our everyday lives. From work and school to daily tasks, these handheld devices have brought everything into the palm of our hands.
Most people spend 5-6 hours on their phones each day. And, given that our phones emit a tiny amount of radiation, we’re exposing ourselves to radiation for hours each day.
But different phones emit different amounts of radiation.
With the help of data collected by the German Federal Office of Radiation Protection, we visualize the radiation emissions of some popular smartphones in the market today.
Radiation and SAR Values of Smartphones
Smartphones and other mobile devices emit tiny amounts of radiofrequency (RF) radiation. Humans can absorb this radiation when the smartphone is being used or is lying dormant anywhere near their bodies.
The parameter used to measure phone radiation emissions is the Specific Absorption Rate (SAR). It is the unit of measurement that represents the quantity of electromagnetic energy absorbed by the body when using a mobile device.
The Council of the European Union has set radiation standards for cell phones at 2 watts per kilogram, measured over the 10 grams of tissue that is absorbing the most signal.
SAR values are calculated at the ear (speaking on the phone) and at the body (kept in your pocket). For the purposes of this article, we’ve used the former calculations.
Smartphones With the Highest Levels of Radiation Emissions
The Motorola Edge has the highest radiation emission with a SAR value of 1.79 watts of radiation per kilogram. That’s significantly higher than most other smartphone models in the market today and close to the limits set by the EU for cellphones.
Coming in second is the Axon 11 5G by ZTE with 1.59, followed by the OnePlus 6T at a close third with 1.55 W/kg. The Sony Experia AX2 Plus with 1.41 and the Google Pixel 3 XL and 3A XL at 1.39 round out the top five.
Here is a look at the 10 smartphones that emit the highest level of radiation:
Now that we have detailed the worst offenders let’s look at the smartphones with the lowest levels of radiation emissions.
Smartphones With the Lowest Levels of Radiation Emissions
The smartphone with the lowest SAR value is the ZTE Blade V10, with 0.13 watts of radiation per kilogram.
Mobile devices by Samsung carry some of the least radiation risks. The company has four phones considered to be the best in the category. The Galaxy Note 10+ is the best model in their line-up, emitting a meager 0.19 watts per kilogram.
Here is a look at the 10 smartphones that emit the lowest levels of radiation:
There is currently no significant research proving the harmful effects of phone radiation.
Despite this, people who are in contact with their devices for extended periods can at least quantify their radiation exposure and make choices about which brands serve their needs.
Who Owns the Most Satellites?
Despite Starlink’s dominance in the industry, the company is set to face intense competition in the coming years.
Who Owns the Most Satellites?
Nearly 7,000 satellites orbit the Earth, serving vital functions such as communication, navigation, and scientific research.
In 2022 alone, more than 150 launches took place, sending new instruments into space, with many more expected over the next decade.
But who owns these objects? In this graphic, we utilize data from the Union of Concerned Scientists to highlight the leaders in satellite technology.
SpaceX’s Dominance in Space
SpaceX, led by Elon Musk, is unquestionably the industry leader, currently operating the largest fleet of satellites in orbit—about 50% of the global total.
The company has already completed 62 missions this year, surpassing any other company or nation, and operates thousands of internet-beaming Starlink spacecraft that provide global internet connectivity.
Starlink customers receive a small satellite dish that self-orients itself to align with Starlink’s low-Earth-orbit satellites.
|Planet Labs, Inc.||195||3%||USA|
|Spire Global Inc.||127||2%||USA|
|Iridium Communications, Inc.||75||1%||USA|
Percentages may not add to 100 due to rounding.
In second place is a lesser-known company, British OneWeb Satellites. The company, headquartered in London, counts the UK government among its investors and provides high-speed internet services to governments, businesses, and communities.
Like many other satellite operators, OneWeb relies on SpaceX to launch its satellites.
Despite Starlink’s dominance in the industry, the company is set to face intense competition in the coming years. Amazon’s Project Kuiper plans to deploy 3,236 satellites by 2029 to compete with SpaceX’s network. The first of the fleet could launch as early as 2024.
The Rise of China’s Space Program
After the top private companies, governments also own a significant portion of satellites orbiting the Earth. The U.S. remains the leader in total satellites, when adding those owned by both companies and government agencies together.
American expenditures on space programs reached $62 billion in 2022, five times more than the second one, China.
China, however, has sped up its space program over the last 20 years and currently has the highest number of satellites in orbit belonging directly to government agencies. Most of these are used for Earth observation, communications, defense, and technology development.
Satellite Demand to Rise Over the Decade
Despite the internet being taken for granted in major metropolitan areas and developed countries, one out of every three people worldwide has never used the web.
Furthermore, the increasing demand for data and the emergence of new, more cost-effective satellite technologies are expected to present significant opportunities for private space companies.
In this context, satellite demand is projected to quadruple over the next decade.
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